20155336 2016-2017-2 "Java programming" the first week of study summary

# 20155336 2016-2017-2 "Java Programming" 1th Week study Summary

# # Textbook Learning Content Summary

The first week of school, with a bit of joy and curiosity, the teacher's first lecture. To learn Java as if to watch an English film and television works as a headache,

Because there are always so many similar names that make you remember to be disoriented. Java is the same, what JVM ah jre ah jdk (/(ㄒoㄒ)/~~) and so on a series of

English abbreviation, let a person mind a mess ~ ~ But the overall Java has a preliminary understanding. Through the introduction of the teacher in the class and the first chapter of the Java Book to browse,

I have a simple understanding of Java's arduous development process. The book says that for beginners in Java, just installing the JDK is more than enough for our current programming

The

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Although it is easy to install the JDK and verify that the installation was successful, there is a challenge in the path and classpath debugging phase because, according to the pictures in the book,

There is also a "\" between "CD" and "Workspace" so no matter how the attempt is unsuccessful, the result is to remove the slash.

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After solving the problem, simply run the Java program, and then follow the instructions in the book to successfully compile the HelloWorld.

For the JRE installation, because the JDK itself has a JRE, only the JDK needs to be installed, there must be a private JRE. Java only knows one operating system, this

The system is called the JVM, so the extension of the code document must be. Class before it can be executed.

In the process of configuring the SSH key, find the application of bash first

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Then follow the steps to enter "Ssh-keygen-t rsa-c" [email protected] in the indicator.

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Locate the. SSH document in the C-drive user's directory, open in text format all copies of the text to open source China to create the project.

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Through a week of intense learning, I have a preliminary understanding of Java, but in many places have encountered problems, so the efficiency of learning is extremely low, I hope to be in the teacher's

Learn more in class and try to be a qualified Java beginner.


# # Problems in textbook learning
-1 Linux Systems Learn what the differences between Java and Windouw are.

2 How do I tell if a file for an import target exists?

-3 Java and C language after all, there are some similar places, Java itself also have those unique syntax?

4 What are the differences between object-oriented and process-oriented?

5 can I assign a value directly when I encapsulate an object?

6 What are the benefits of polymorphism in Java programs?

-What is the difference between a 7 interface and an abstract class? What is the difference between the similarities?

8 What is the condition that satisfies the exception match and what is the order of the multi-exception problem processing?

9 Collection derived two interfaces what are the characteristics of the map interface?

-Can I/O stream be used in all data transfer locations in Java?

11 Why you need to use threads, how to create threads, and how to create threads in a better way

12 I want to know about another problem overload that the lambda expression brings?

13 want to know the system time, what is the easier way?

14 What is the specific castration method in NiO?

-What are the 16 database optimization experiences?

-Class 17 Loaders are divided into three categories, what is the biggest difference between them?

18 Why is the last parameter a variable parameter, other arguments not?

20155336 2016-2017-2 "Java programming" the first week of study summary